Abstract: A gasket for a shaker screen in a vibratory separator includes an outer peripheral section including an end section from which a upper lip segment and a lower lip segment project inward to generally define a U-shaped channel, wherein the outer peripheral section is formed from an electrically conductive elastomeric material, a partial upper lip projecting inward from the upper lip segment, wherein the partial upper lip is formed from a white elastomeric material, and a partial lower lip projecting inward from the lower lip segment, wherein the partial lower lip is formed from a white elastomeric material.

Abstract: An elastic sieving method and corresponding large-sized elastic vibration screen. The present invention utilizes a screening surface and a separate sieving machine. A screen mat located on the sieve box is connected to multiple small rectangular screens. While the machine is vibrating, the resonation of screen rods located on the screen mat connected by small rectangular screens are initiated to screen the material and to cause the vibration of the whole vibration screen and realize the conveyance and lamination of materials. Because the screening surface is in a state of resonance, the vibration strength is strong enough to prevent the screen meshes from becoming plugged, allowing for high sieving efficiency. A bearing in the sieving mechanism is installed with a vibration damping ring, placing the bearing in a resonant state, allowing for a low dynamic stress level, which satisfies the process requirement for large-sized vibration screen excitation units with a screening surface as wide as 4800 mm.

Abstract: A vibrating screen apparatus for sizing materials is shown that has a minimum of moving parts therein. A vibrating motor is mounted below longitudinal vibrating bars. The vibrating bars are set on air mounts, which air mounts are between the vibrating bars and cross braces connected to the frame. The vibrating bars press against the underside of a vibrating screen to form a crown therein when the air mounts are inflated. The vibrating screen is stretched between the sides of the frame by tensioning rails. A shroud over the top of the frame is secured in place. Multiple size materials can be produced by stacking multiple vibrating screen apparatuses.

Abstract: A vibrating screen apparatus having a pair of side members, a screen surface supported between the side members, a pair of frame members supported between the side members and beneath the screen, a first hammer to vibrate the screen, a second hammer that alternately vibrates the screen with the first hammer and a motor to impart motion to the hammers and frame members. The screen apparatus is provided with a method to selectively tension the screen surface. The apparatus is equipped to permit varying the frequency and amplitude of the hammers and screen material. The apparatus is equipped with only a single motor on each screen section to provide economy in use.

Abstract: Apparatus for removing debris from granular material includes a set of scalper assemblies and striker assemblies, which are disposed between an inlet and an outlet, and which are interconnected by a mechanical system to help urge the flow of the material through the housing to the outlet. The scalper assemblies are disposed on a set of frames covered with removable screens so that the flow of material falling against the scalper screens, cascades down the screens to form a flowing sheet of material, which falls off of the terminal end of the frame. The scalper screens are tiered and portions thereof are raised and dropped to help urge the larger debris within the granular material downwardly across the scalper screen towards its terminal end, while concurrently permitting the smaller granular material disposed thereon to fall through the screen meshings.

Abstract: Disclosed is a vibratory screening machine comprising a frame, a pair of screens mounted in the frame one beneath the other, electromagnetic vibrating drives, and two sets of pushers. Located in the frame are stops rigidly secured in relation thereto. The pushers of the first set are connected to the vibrating drives and make contact with the screen closest to the drives. The pushers of the second set are positioned within the guides in alignment with the pushers of the first set and spring-loaded against the stops in the direction of said pushers of the first set.

Abstract: A sifting device consists of a mesh with a vertical wall and protrusions, which attach the device to the rim of a bowl of a food processor. An open-based cone is co-axial with a central rotatable hub and is provided with protuberances on the inner surface thereof. In operation, ingredients are placed in the device and protuberances engaged in turn with a projection, as the hub is rotated, so as to provide undulations of the mesh, thus tossing the ingredients in the device and introducing them into the bowl through the mesh.

Abstract: A power sieve has a generally planar and longitudinally extending frame having upstream and downstream ends and a pair of laterally spaced side members extending longitudinally between the ends, a generally planar screen spanned longitudinally within the frame, and a plurality of longitudinally spaced and substantially parallel beater beams underneath the screen and having beam ends juxtaposed with the frame side members. Respective horizontally extending leaf springs each have one end secured to the respective side member and another end secured to the respective beam end. Thus the beams can move generally vertically on the springs. Respective beater arms extending generally parallel to the screen from the beater beams have outer ends engageable with the underside of the screen.

Abstract: Classifying apparatus and methods for the separation of solids of differing sizes includes a screening deck having an inclined frame and a screen in the frame on which the solids are deposited and moved downwardly. A plurality of beams extend beneath the screen transversely of the frame and the ends of the beam are mounted to the frame by a resilient mounting to isolate vibrations of the beam from the frame. A tappet assembly is fixed to each of the beams and contacts the underside of the screen and a vibrator motor is mounted to each of the beams to directly vibrate the beam, the tappet assembly of each beam, and the screen. Controls may be provided for independently operating each of the vibrators to vary one or both of the frequency or the amplitude of the vibrations of the screen over its length.

Abstract: A silk screen printing process and apparatus in which a silk screen having a porous figure printing area may be divided by partitions into compartments for different types or colors of ink. The printing operation is performed by a rapid upward acceleration of the silk screen and sheet on which the printing is to be performed, thereby causing the ink to flow through the porous printing area of the screen as a result of inertia. Various types of apparatus may be used to perform the process, one consisting of a platen on which the sheet and silk screen are placed, and a hammer type element which strikes the underside of the platen to produce the upward acceleration.